带有 flexbox 的粘性页脚 [英] Sticky footer with flexbox

问题描述

我发现了一种为我的网站创建粘性页脚的非常简单的方法，乍一看似乎效果很好.

但由于我没有看到其他人使用同样的东西，我想知道这种做法是否被打破，在完全不支持 flex-box 的浏览器之外?

我使用 bootstrap 来设置 flex-box，我在 React 中工作，这是我的代码:

<div><!-- 内部 div --><主导航/>
<MainFooter className="d-flex flex-column"/>

对于不知道 react 的人:外部 div 可以被视为普通"html 页面上的 body 元素.

body-div 的css:

min-height: 100vh;

所以基本上我通过将它们的容器设置为 flex-box 并将 justify-content 的属性设置为 space-between 来分别将内部 div 和主页脚推到顶部和底部.

另外，我想补充一点，除了页脚之外，我网站的内容将进入内部 div.

解决方案

是的，这是一个正常的设置.这就是 justify-content: space-between 应该做的:将第一个和最后一个元素固定到容器的边缘.

main {显示:弹性；弹性方向:列；对齐内容:间隔；高度:100vh；}文章 { 背景颜色:浅绿色；}页脚 { 背景颜色:橙红色；}正文{边距:0；}

<article>内部 div</article><footer>footer</footer></main>

此外，如果您希望主要内容填充空白空间，同时将页脚固定在底部，您甚至不需要 justify-content.使用 flex-grow.

main {显示:弹性；弹性方向:列；高度:100vh；}文章 {弹性增长:1；背景颜色:浅绿色；}页脚 { 背景颜色:橙红色；}正文{边距:0；}

<article>内部 div</article><footer>footer</footer></main>

最后，当您在一个 flex 容器中有多个元素时，justify-content 可能无法提供足够的对齐选项.使用自动边距，您可以获得更大的灵活性.

I found out a very simple way of creating a sticky footer for my website, and at first sight it seems to work perfectly.

But since I don't see other people using the same thing, I am wondering if this way of doing it is broken, outside of browsers which don't support flex-box at all?

I use bootstrap for setting flex-box, and I am working within React, here is my code:

<div className="body-div d-flex flex-column justify-content-between">
  <div>  <!-- inner div -->
    <MainNav/>
  </div>
  <MainFooter className="d-flex flex-column"/>
</div>

For people who don't know react: the outer div can be seen as the body element on a 'normal' html page.

css for the body-div:

min-height: 100vh;

So basically I let the inner div and the main footer be pushed to the top and bottom respectively by setting their container to flex-box with the property of justify-content set to space-between.

Also I'd like to add that my site's content, except for the footer that is, will go inside the inner div.

解决方案

Yes, this is a normal set-up. That's what justify-content: space-between is supposed to do: Pin the first and last elements to the edges of the container.

main {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100vh;
}

article { background-color: lightgreen; }
footer  { background-color: orangered;  }
body    { margin: 0; }

<main>
  <article>inner div</article>
  <footer>footer</footer>
</main>

Also, if you want the main content to fill the empty space, while pinning the footer to the bottom, you don't even need justify-content. Use flex-grow.

main {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

article {
  flex-grow: 1;
  background-color: lightgreen;
}

footer  { background-color: orangered;  }
body    { margin: 0; }

<main>
  <article>inner div</article>
  <footer>footer</footer>
</main>

Lastly, when you have multiple elements in a flex container, justify-content may not provide enough options for alignment. You have a lot more flexibility with auto margins.

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